The Firefox beta for Android comes with the custom open source fonts Charis and Open Sans. They will replace the default Android fonts for what Mozilla claims is “a visually appealing and clear reading experience.”

As for the HTML5 compatibility optimizations, the beta release includes improvements to HTML5 compatibility, as tested on HTML5test.com. Mozilla boasts that Firefox for Android now scores 411 and 14 bonus points (out of a total of 500).